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Rhododendron 'Silberwolke' is a dense, well-branched evergreen shrub that grows into a rounded shrub with little upkeep. This Yakushimanum hybrid is stunning in bloom and is deserving of its RHS AGM. The feathery white blooms emerge from purple-pink buds, providing a striking contrast to the deep, lustrous foliage. It's a lovely addition to acid borders, offering a burst of spring colour to shaded areas. Height and spread: 130 cm (52).